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From:   SeongJae Park <sj@kernel.org>
To:     Masahiro Yamada <masahiroy@kernel.org>
Cc:     SeongJae Park <sj@kernel.org>, Ard Biesheuvel <ardb@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Guenter Roeck <linux@roeck-us.net>,
        "Jason A. Donenfeld" <Jason@zx2c4.com>,
        Yoshinori Sato <ysato@users.sourceforge.jp>,
        Rich Felker <dalias@libc.org>, Arnd Bergmann <arnd@arndb.de>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Palmer Dabbelt <palmer@rivosinc.com>
Subject: Re: Linux 6.2-rc2
Date:   Tue, 10 Jan 2023 19:14:04 +0000
Message-Id: <20230110191404.132594-1-sj@kernel.org>
In-Reply-To: <CAK7LNAR7dfv=---C15S3ohTEWsoyRNTrasY9ysD1ahZxLZAXow@mail.gmail.com>
References: 
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Hi Masahiro,

On Wed, 11 Jan 2023 03:39:58 +0900 Masahiro Yamada <masahiroy@kernel.org> wrote:

> On Tue, Jan 10, 2023 at 9:32 AM SeongJae Park <sj@kernel.org> wrote:
> >
> > On Tue, 3 Jan 2023 11:58:48 +0100 Ard Biesheuvel <ardb@kernel.org> wrote:
> >
> > > On Tue, 3 Jan 2023 at 03:13, Linus Torvalds
> > > <torvalds@linux-foundation.org> wrote:
> > > >
> > > > On Mon, Jan 2, 2023 at 5:45 PM Guenter Roeck <linux@roeck-us.net> wrote:
> > > > >
> > [...]
> > > --- a/include/asm-generic/vmlinux.lds.h
> > > +++ b/include/asm-generic/vmlinux.lds.h
> > > @@ -896,7 +896,7 @@
> > >   * Otherwise, the type of .notes section would become PROGBITS
> > > instead of NOTES.
> > >   */
> > >  #define NOTES                                                          \
> > > -       /DISCARD/ : { *(.note.GNU-stack) }                              \
> > > +       .note.GNU-stack : { *(.note.GNU-stack) }                        \
> > >         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
> > >                 BOUNDED_SECTION_BY(.note.*, _notes)                     \
> > >         } NOTES_HEADERS                                                 \
> > >
> > > The .note.GNU-stack has zero size, so the result should be the same.
> > >
> >
> > This also fixes ARCH=um build error on my system.
> >
> > Tested-by: SeongJae Park <sj@kernel.org>
> 
> 
> 
> I am able to build ARCH=um defconfig at least.
> 
> Can you provide the steps to reproduce the build error?

I do the build for kunit test, like below.

    mkdir ../kunit.out
    echo "
    	CONFIG_KUNIT=y
    
    	CONFIG_DAMON=y
    	CONFIG_DAMON_KUNIT_TEST=y
    
    	CONFIG_DAMON_VADDR=y
    	CONFIG_DAMON_VADDR_KUNIT_TEST=y
    
    	CONFIG_DEBUG_FS=y
    	CONFIG_DAMON_DBGFS=y
    	CONFIG_DAMON_DBGFS_KUNIT_TEST=y
    CONFIG_DAMON_PADDR=y" > ../kunit.out/.kunitconfig
    ./tools/testsing/kunit/kunit.py run --build_dir ../kunit.out
    [19:12:37] Configuring KUnit Kernel ...
    [19:12:37] Building KUnit Kernel ...
    Populating config with:
    $ make ARCH=um O=../kunit.out/ olddefconfig
    Building with:
    $ make ARCH=um O=../kunit.out/ --jobs=36
    ERROR:root:`.exit.text' referenced in section `.uml.exitcall.exit' of arch/um/drivers/virtio_uml.o: defined in discarded section `.exit.text' of arch/um/drivers/virtio_uml.o
    collect2: error: ld returned 1 exit status
    make[2]: *** [/home/sjpark/linux/scripts/Makefile.vmlinux:34: vmlinux] Error 1
    make[1]: *** [/home/sjpark/linux/Makefile:1252: vmlinux] Error 2
    make: *** [Makefile:242: __sub-make] Error 2


Thanks,
SJ

> 
> 
> 
> 
> --
> Best Regards
> Masahiro Yamada